Oh I am aware of two wheel conversions for snow just not a Norton specific one. I'm a poor simple guy so a big clunking snowmobile track is out of the question but a more minimalist version is in Peel's plan's. Wrap your minds on adapting this design to a C'do. That hill climb first run shows a phase 3 turn near the top to return for another run. That the same maneuver to a hook around a decrease'r switch back w/o power let off. It takes a spinning rear *in good thrust* traction with front straight steering to do it. If you ain't entered fast enough to crash like ordinary motorcycles then the spun rear just weather vanes down hill to keep front pointed up hill, not the way one wanted to go. Done right you can spiral a bike under power right into a snow angel. Done wrong they call it a wide slide low side crash.
http://www.ktrakcycle.com/
Do note I'm aiming a turn to the R here and doing it exactly opposite to lazy wide load relieving flat tracker way.
But snow don't relate well to road racing its more like dirt you can dig into, ice and THE Gravel do relate to wet pavement so I think ice spiked paddle tires are the funner way to go.
